If I remember correctly: T
he viewfinder CDS meter is essentially the same as the OM1(n) i.e. centre
weighted.
The OTF on am OM2 is average at slow shutter speeds, when the measurement
is off the film surface, and centre weighted at high speeds when off the
curtains. I suppose there must be some transition between the two as the
slit becomes narrower.
The OTF on an OM2n is always average, whether off the film or the curtain,
which at least gives consistent results regardless of the shutter speed.
Chris
On Fri, Jun 15, 2012 at 2:53 PM, <usher99@xxxxxxx> wrote:
> Had to go to web archive for curtain pattern image as the site seems
> defunct. There is a separate meter circuit for the VF meter. Perhaps
> John or someone can clarify the OTF vs Off the curtain reading. I
> recall John mentioning that he installed a center weighted curtain on
> at least one 2N---a Nat. Geographic cam.
>
>
> http://tinyurl.com/ckty9bs
>
>
> Just an average (curtain) Mike
>
>
> >I thought that when the OMs actually read off the film in auto mode
> (at slow
> >speeds), the metering is average as film doesn't have the c-w pattern
> seen on
> >the shutter curtain.
>
> >Martin
>
>
>
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